20154324227 has 2 divisors, whose sum is σ = 20154324228. Its totient is φ = 20154324226.

The previous prime is 20154324181. The next prime is 20154324263. The reversal of 20154324227 is 72242345102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20154324227 - 2⁸ = 20154323971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20154324193 and 20154324202.

It is not a weakly prime, because it can be changed into another prime (20154314227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077162113 + 10077162114.

It is an arithmetic number, because the mean of its divisors is an integer number (10077162114).

Almost surely, 2^20154324227 is an apocalyptic number.

20154324227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154324227 is an equidigital number, since it uses as much as digits as its factorization.

20154324227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 20154324227 its reverse (72242345102), we get a palindrome (92396669329).

The spelling of 20154324227 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-four thousand, two hundred twenty-seven".